Hello thanks for asking from HCM for your health related queries
I can understand your problem. First of all I would like to tell you about some psycho-sexual issues. One is that
masturbation or self stimulation of genitals is completely a safe and healthy practice. It is not associated with any loss of sexual power or any other health issues. So you haven't done any thing wrong and this is not the cause of your present problem.
During masturbation most of individuals have ejaculation earlier than normal but that usually improves when individuals engage themselves in actual sexual intercourse. So don't worry about that problem of early ejaculation.
If you have persistent early ejaculation then in such case you should
consult a psychiatrist for help. Don't fall pray of unqualified doctors as they will rough you of money. Medicines like SSRIs are particularly used in pre-mature ejaculation.
Dapoxetine is very useful in such complaints. Herbal medicines like Tantex Royal, Confido are also very efficacious. You are getting normal erection so poor sexual power is not an issue for you. Please consult a psychiatrist for help.
All the medicines I have mentioned are prescription medicines and take these medicines with prescription only.
Thanks, hope this helps you. Take care